{
  "pools": {
    "A.wildcard": {
      "servers": [ "localhost:12345" ]
    },
    "B.wildcard": {
      "servers": [ "localhost:12346" ]
    },
    "C.wildcard": {
      "servers": [ "localhost:12347" ]
    },
    "D.wildcard": {
      "servers": [ "localhost:12348" ]
    }
  },
  "route": {
    "type": "FailoverRoute",
    "children": ["PoolRoute|A.wildcard",
                 "PoolRoute|B.wildcard",
                 "PoolRoute|C.wildcard",
                 "PoolRoute|D.wildcard"],
    "failover_policy": {
      "type": "LeastFailuresPolicy",
      "max_tries": 3
    }
  }
}
